CN109039482A - Distributed system for radio frequency environment simulation - Google Patents

Abstract

It discloses a kind of for measuring the method and system of test system.In some embodiments, system includes: emulator core, the emulator core is located at the center position outside test cabinet, the emulator core configuration detracts to introduce in each of the signal that at least one is received and at least one transmission signal to generate digital impairment signal, and at least one of following device, the device is located at the remote location inside test cabinet, for each in the more antennas communicated with test system (DUT): transmitter, the transmitter are configured to digital impairment signal being converted to analog rf signal；And receiver, the analog rf signal that receiver is configured to receive are converted to be detracted by the emulator core to generate the signal of impairment signal received.

Description

Distributed system for radio frequency environment simulation

Divisional application

The application be application number 201710601833.7, on July 2017 applying date 21, it is entitled " be used for radio frequency environment mould The divisional application of quasi- distributed system ".

Priority

The U.S. Patent Application Serial Number 15/ that patent application claims are submitted on July 28th, 2016 in U.S. Patent Office 221,959 priority.

Technical field

This disclosure relates to a kind of for emulating the method and system of the channel in radio frequency (RF) communication system, the radio frequency (RF) Communication system includes the system operated in microwave and millimeter-wave frequency range.

Background technique

U.S. Patent No. 8,331,869 describe for carrying out airborne performance test to wireless device using more antennas System and method.This kind of system of referred to as boundary arrays system can reproduce radiating near field environment, the radiating near field environment for For device in the test space, like the radiating near field environment is derived from far field and with the multipath of selected simulated environment Characteristic is the same.

Fig. 1 is that typical multiple-input and multiple-output (MIMO) boundary arrays for being tested test system (DUT) 22 are matched 10 are set, shows and the anechoic chamber, connected is able to by space channel emulator 18 and amplifier 20 in wireless communication tester 16 Boundary arrays antenna 12 in 14.Splitter 28 can be inserted in wireless communication tester 16 and space channel emulator 18 it Between.Some configuration requirements make multiple individual channel simulators synchronous to generate enough output channels simultaneously, to drive in room In all antenna elements.The test configurations of Fig. 1 are commonly used in assessing the receiver performance of DUT 22.When DUT 22 is When cellular phone, for example, the test configurations of Fig. 1 will assess the downlink signal from base station to mobile phone.As DUT 22 When being base station, for example, the test configurations of Fig. 1 will assess the uplink signal from mobile phone to base station.In order to simply rise See, DUT receiver test configurations is known as downlink herein, and DUT transmission test configurations are known as uplink.For For the sake of simplicity, the configuration of Fig. 1 is unidirectional.Additionally use bilateral system.

Test system (DUT) 22 is located at the electricity on the locator (such as, turntable) in the test space of anechoic chamber, 14 Wave darkroom 14 passes through RF absorber inwall, floor and ceiling and being environmentally isolated outside anechoic chamber, 14.The battle array of antenna 12 Column are in all directions to DUT electromagnetic radiation energy (radio wave).By space channel emulator 18 in antenna 12 The radiation signal of each antenna is applied with various detractions (delay extension, Doppler, interference etc.) in real world Multipath fading simulated.

By the way that one or more digitized space channel emulator 18 of the signal received is surveyed to from wireless communication It tries 16 received signal of instrument and introduces various detractions.Space channel emulator 18 postpones the amplitude of received digitized signal And weighting.More specifically, space channel emulator 18 can add multidiameter common in typical radiated communications path, delay Extension, decline, interference and other detractions, and then convert the result to analog signal and result is up-converted into radio frequency. Therefore, each output of space channel emulator 18 can be the input signal that delay and weighting are defined according to channel model The summation of multiple copies, and the movement modeled based on the relative motion to DUT 22 or intermediate reflectors is defined in time Variation.Doppler frequency shift can also be introduced by relative motion.Can also by addition additive white Gaussian noise (AWGN) or The other noises of person and by injection particular interference signal come introduce interference.The whole that will be emulated herein by channel simulator Channel effect is referred to as detracting.

In Typical Disposition, the quantity of the input of space channel emulator 18 can be with the output of space channel emulator 18 Quantity it is different.Splitter 28 can be inserted between wireless communication tester 16 and space channel emulator 18.Power amplification Device 20 amplifies each output of space channel emulator 18 and is directed toward it on the path usually provided by cable Antenna 12.Space channel emulator emulates multiple channels, and each channel is associated from different antennas 12.

It needs to amplify between space channel emulator 18 and antenna 12 to generate to be connect by the DUT on downlink The enough radiant powers received, and will be from the received small signals amplification of DUT to the reception for the channel simulator being higher than in uplink Device sensitivity.Wireless communication tester 16 emulates one end of the radio link opposite with DUT.Uplink is signal The path (these paths are not shown in Fig. 1) of wireless communication tester 16 is traveled to from DUT 22.

It wirelessly communicates tester and signal is generated according to the communication protocol of DUT.For example, wireless communication tester 16 can be generated For the transmission signal that long term evolution (LTE) signaling is formatted, and can receive for LTE signaling from DUT equally by lattice The signal of formula.Other communication protocols, such as, Wi-Fi can be used by wirelessly communicating tester 16.It also shows and is coupled to low noise The communication antenna 24 of acoustic amplifier (LNA), low-noise amplifier (LNA) are connected to wireless communication tester 16.The communication antenna 24 purpose is to provide replace, do not decline and possible low-loss communication path between DUT and communication test instrument, so as to Tested on DUT the signal unrelated with measurement (for example, closed loop feedback of the numeric error rate during receiver sensitivity test) with Maintain complete communication link.

Fig. 2 is an exemplary embodiment of RF channel simulator 18, and RF channel simulator 18 includes around number letter Number processing channel simulator core 34 emulator receiver (vector signal analyzer) 30 and emulator transmitter (vector signal Generator) 32.In channel simulator core, each signal can be detracted and add it to other signals to produce Raw impairment signal, thus to propagating, being reflected by barriers such as buildings and with the arrival of different amplitude and phase in the sky The effect of one or more signal of DUT is simulated.Doppler frequency shift can also be introduced by channel simulator core 34.

Fig. 3 shows the common component of emulator receiver 30.Low-noise amplifier 36 receives the RF that may have low SNR Signal, and RF signal is amplified and optionally, the RF signal of amplification is transferred to including variable gain amplifier 38 Another amplifying stage.In the case where being carried out in frequency mixer 40 to the RF signal of amplification using the LO signal from local oscillator (LO) 42 Frequency conversion is filtered and may be by intermediate frequency or baseband signal that amplifier 46 is further amplified with generating by filter 44.Amplification The signal output of device 46 is analog signal, which can be converted to digital signal by analog-digital converter (ADC) 48.

Fig. 4 shows the common component of emulator transmitter 32, comprising: digital analog converter (DAC) 50, is put filter 52 Big device 54.It may be at base band by the signal of these components or in intermediate frequency.Then the signal and the sheet from LO 58 Ground oscillator signal mixes in frequency mixer 56.The output of frequency mixer is can be further by variable gain amplifier (VGA) 60 The RF signal of amplification.

Fig. 5 is the single emulation down channel between wireless communication tester 16 and DUT 22.It (rises for convenience See, the direction of propagation in Fig. 5 is known as down direction by us).In the downlink, wireless communication tester 16 is generated to by nothing The received transmission signal in the sky of line apparatus DUT 22.62a is routed by signal to believe the transmission from wireless communication tester Space channel emulator 18a number is routed to, signal routing 62a can be, for example, coaxial cable and will make it possible to switch to Alignment path or other test path (not shown) flexibly to change the switch configured as needed.It should be noted that in channel radio There may be any amount of paths RF between letter tester 16 and space channel emulator 18 to carry out multiple-input and multiple-output (MIMO) or diversity is tested, and all these RF combination of paths are at each antenna element at the output of space channel emulator 18 The single path RF of part.

Space channel emulator 18a replicates each signal received from communication test instrument 16, in different ways to each A copy is detracted, and combines impaired copy to generate the impairment signal of channel.Detraction can be right applied by it should be noted that Multipath effect and Doppler frequency shift and other effects with time and frequency dependence are simulated.By space channel emulator The impairment signal of 18a output is to route 62b by signal to be coupled to amplifier 64 with RF signal to be amplified.It is routed by signal The output of amplifier 64 is routed to the anechoic chamber, 14 of antenna 12 by 62c.Impairment signal is radiated test system 22 by antenna 12. It should be noted that being RF signal by the signal that signal routing (collectively referred to as signal routing 62) carries, accordingly, it is possible to occur great Loss.

Fig. 6 is positioned at DUT 22 and to wirelessly communicate the single emulation down channel between tester 16.It (rises for convenience See, the direction of propagation of Fig. 6 is known as up direction by us).Antenna 12 receives the signal that is radiated by DUT 22, and antenna 12 is by electromagnetism Radiation (radio wave) is converted to the RF signal amplified by low-noise amplifier (LNA) 36.Routing 62d by signal will Outside the RF output coupling of LNA 36 to the anechoic chamber, 14 of space channel emulator 18b.Space channel emulator 18b can be docked The copy of the RF signal received forms impairment signal using different detractions, to multipath, the progress of Doppler frequency shift environment Simulation.The output of space channel emulator 18b is to route 62e by signal to be coupled at least one for wirelessly communicating tester 16 Output signal.

It should again be noted that signal routing 62 carries RF signal, therefore, signal routing 62 can introduce great loss.With Fig. 5 Downlink chain it is the same, Fig. 6 uplink configuration in, space channel emulator 18 and wireless communication tester 16 between can deposit It is tested in any amount of path RF to carry out MIMO or diversity.It can be from the input in space channel emulator 18 Single RF signal exports the path RF.

It should be noted that can use two separate, synchronizing channel emulator 18a and 18b or as single the Double Faces to Install Unit emulates to execute two-way channel.Each channel simulator block can also be realized by multiple channel simulators, herein, this is more A channel simulator is referred to as space channel emulator 18.

Although boundary arrays technology is theoretically to can produce the powerful mechanism of any desired RF environment, currently may be used There are physics, practice and financial resources to limit the content that may be implemented using system with the ability of RF test equipment.

The ability of unique relevant spatial distribution is generated in the test space by the identical Nyquist to far to field transformation Theorem limit decision should have at least two sampled point (days along the every wavelength of spherome surface around the spherical surface of DUT as a result, Line direction).Antenna separated region or general RF interaction area on DUT is bigger, and the active antenna needed in boundary arrays is got over Mostly to generate RF environmental condition appropriate.

In addition to around test space periphery antenna size physical limit (physical limit with antenna 12 quantity increase Add, promote array diameter bigger) except, the incrementss of the quantity of required amplifier and channel simulator resource reach aerial position number As many as four times of amount.Support two antenna elements of cross polarization (that is, dual polarization day since each aerial position can be called Line) come, and assume to be two-way communication, therefore, each aerial position needs to be connected to two channels far from aerial position imitative Four amplifiers of true device transmitter and two channel simulator receivers.In addition, for global face covering, the number of required antenna Amount square increases in proportion to (that is, N ∝ (f r) with to measured frequency multiplied by maximum radial elongation (MRE) size of DUT²Or N∝(r/λ)², wherein r is radial dimension, and N is the quantity of antenna, and λ is wavelength).Briefly, with test frequency and/or DUT size increases, and the quantity of required antenna increases.

Since RF channel simulator 18 is initially designed to the conduction test for transmitting set and receiver, Make to require to amplify again it is suitable for aerial test condition to overcome loss associated with RF cable, boundary arrays antenna 12 Antenna efficiency with both antennas of DUT 22 and the free space path loss due to caused by extent length.Due to power Amplifier 20 is not by the power control of space channel emulator 18, therefore, must provide highly linear performance with empty in test Interior generation anticipating power level.

Similarly, since before the power control on downlink betides amplification, therefore, it is desirable to which signal level is closer to instrument Device noise floor value, and then both signal and noise are amplified and are injected into anechoic chamber, wherein instrument Device noise is likely to become the pith for the signal-to-noise ratio (SNR) seen on DUT receiver.Also by the noise system of power amplifier Number increases to the noise of channel simulator and Other Instruments, to reduce SNR.

Similarly, on uplink, the signal received at boundary arrays antenna 12 from DUT 22 is far below space The expection signal level of the input of channel simulator 18, it is therefore desirable to carry out low noise amplification to be increased to above sky Between channel simulator 18 receiver sensitivity.Due to leading to 18 phase of space channel emulator from anechoic chamber, 14 with by signal Associated cable loss increases loss, therefore, adversely affects and increases caused by signal-to-noise ratio.

Moreover, the two-way communication for existing simultaneously downlink and uplink signal needs to introduce some form of isolation to ensure downlink The high-power output of amplifier will not be coupled into the highly sensitive input of low-noise amplifier.It is any between two amplifiers Cross-coupling may seriously reduce system performance, and be likely to the input in amplifier and/or channel simulator 18b Upstream side is damaged.

Since traditional space channel emulator 18 is resident in the large size of the test equipment except shielding anechoic chamber, 14 Rack installation part, therefore, with the increase of aerial position quantity, not only extent length be will increase, and channel simulator 18 with The required length of all cables between amplifier 20 increases, and boundary arrays antenna 12 usually increases radius incrementss extremely It is π times few.Although free space path loss can be at logarithmically increasing with the increase of radius, the loss of RF cable is cable The linear function of length.Therefore, finally, cable loss can dominate the loss of system, because system is expanded to including more Channel.

On the contrary, there are the upper limits for the output power of single power transistor in suitable instrument amplification, so increasing amplification To overcome additional path loss to become parallel amplification rather than series connection scale-up problem, have at output that power combination is related The complexity of connection.As a result, size associated with larger amplifier, cost, the increasing with linear power output such as being thermally generated Add and exponentially increases.Finally, the quantity of required RF cable equally also increases amplifier and channel simulator must be increased Four times of the quantity of probe positions.

For wirelessly communicating tester 16, generates RF signal and then it is tuned and is digitized via sky Between channel simulator 18 execute the process of channel simulator and by additive error and uncertain can introduce uplink and downlink In the signal of the two.

Therefore, a problem of existing system is RF path loss associated with related distance and overcomes these damages Amplification needed for consumption.Using the existing centralization RF channel simulator that is designed for conduction test and coupled with it overcome Expensive high power amplifier needed for the path loss results in the big portion for spending RF electric cable heating by internal loss Divide amplification expense.

Summary of the invention

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT.The system packet Include: emulator core, the emulator core are located at center position, which is to transmit signal at least one Each in introduce detraction to generate digital impairment signal；And transmitter, the remotely located place of the transmitter, the transmitting Device is configured to digital impairment signal being converted to analog rf signal.

In some embodiments, transmitter includes digital analog converter and upconverter.In some embodiments, the system into One step includes: communication test instrument, which is located at center position, which is configured to generate at least one Transmit signal.In some embodiments, remote location is in test cabinet and center is outside test cabinet.In some embodiments In, which further comprises: cable, which is that digital impairment signal is carried to remote location from the central position.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT.The system packet Include: receiver, the remotely located place of the receiver, the receiver are configured to analog rf signal being converted to digital signal；With And emulator core, the emulator core are located at center position, which is at least the one of digital signal Detraction is introduced in each of a copy to generate at least one impairment signal.

In some embodiments, receiver includes low-converter and analog-digital converter.In some embodiments, the system into One step includes: communication test instrument, which is located at center position, which is configured to receive at least one Impairment signal.In some embodiments, remote location is in test cabinet and center is outside test cabinet.In some embodiments In, which further comprises: cable, which is that digital signal is carried to center from remote location.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT.The system packet It includes: the first emulator core, the remotely located place of the first emulator core, for each at least one simulated channel It is a to be configured to introduce detraction in each of at least one transmission signal to generate impairment signal；And transmitter, the hair Emitter is configured to impairment signal being converted to radio frequency rf signal.

In some embodiments, transmitter includes digital analog converter and upconverter.In some embodiments, the system into One step includes: communication test instrument, which is located at center position, is configured to generate at least one transmission signal.? In some embodiments, remote location is in test cabinet and center is outside test cabinet.In some embodiments, the system is into one Step includes: cable, which is that impairment signal is carried to remote location from the central position.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT.The system packet Include: receiver, the remotely located place of the receiver are configured to receive radio frequency for each of at least one simulated channel The RF signal and RF signal for receiving this is converted to down-conversion signal；And emulator core, the emulator core configuration Detraction to be introduced in each of at least one copy of down-conversion signal to generate at least one output signal.

In some embodiments, receiver includes low-converter and analog-digital converter.In some embodiments, the system packet Include: communication test instrument, the communication test instrument are located at center position, are configured to generate at least one output signal.In some realities It applies in example, remote location is in test cabinet and center is outside test cabinet.In some embodiments, which includes: cable, The cable configurations are that impairment signal is carried to center from remote location.

Detailed description of the invention

When in conjunction with attached drawing with reference to it is described in detail below when, will be easier to be more fully understood embodiment described herein and its Adjoint advantage and feature, in the accompanying drawings:

Fig. 1 is the block diagram of known unidirectional boundary arrays test macro；

Fig. 2 is the schematic diagram for the known spatial channel simulator of typical conducting radio test；

Fig. 3 is the block diagram of the common component of emulator receiver；

Fig. 4 is the block diagram of the common component of emulator transmitter；

Fig. 5 is the single emulation down channel wirelessly communicated between tester and DUT；

Fig. 6 is the single emulation up channel between DUT and wireless communication tester；

Fig. 7 is the block diagram of the distributed channel analogue system for downlink signaling；

Fig. 8 is the block diagram of the distributed channel analogue system for uplink signaling；

Fig. 9 is the block diagram of the alternate embodiment of the distributed channel analogue system for downlink transfer；

Figure 10 is the block diagram of the alternate embodiment of the distributed channel analogue system for uplink；

Figure 11 is the block diagram of the embodiment of the distributed channel analogue system for downlink transfer；

Figure 12 is the block diagram of the embodiment of the distributed channel analogue system for uplink；

Figure 13 is the block diagram for the bidirectional nodes to downlink and the channel simulator of uplink；

Figure 14 is the block diagram of the two-way dual polarization system for the channel simulator to downlink and uplink；

Figure 15 is that have DUT and be connected to more antennas of multiple distributed communication tester/channel simulator nodes The block diagram of anechoic chamber,；

Figure 16 is the block diagram of double border array system；

Figure 17 is the flow chart for implementing the first example process of measuring system；

Figure 18 is the flow chart for implementing the second example process of measuring system；

Figure 19 is the flow chart for implementing the third example process of measuring system；

Figure 20 is the flow chart for implementing the 4th example process of measuring system.

Specific embodiment

Before exemplary embodiment is described in detail, it should be noted that embodiment essentially consists in and electromagnetism for testing device The combination of measuring system related apparatus assembly and processing step.Therefore, in appropriate circumstances by normal in attached drawing Rule symbol illustrates system and method component, illustrates only detail those of related to embodiment of the disclosure is understood, with Just the disclosure will not be made smudgy for benefiting from the obvious details of those skilled in the art described herein.

As used herein, the relational terms of " first " and " second ", " top " and " bottom " etc. can be only used for Distinguish an entity or element and another entity perhaps element without necessarily requiring or implying this entity or element it Between physics or logical relation or sequence.

Some embodiments include distributed channel analogue system.In some embodiments, the function of space channel emulator It is centrally located between position and remote location.In some embodiments, for example, the upconverter of distributed channel analogue system Can be remotely located with low-converter, such as in test cabinet, and emulator core is retained in center.As used herein , remote location can be the position where the antenna of electromagnetic measuring system.Center is far from remote location and can have There is the user interface for controlling the test executed by electromagnetic measuring system.By by the components distribution of space channel emulator extremely Remote location, low loss cable can be used for intermediate frequency (IF) signal or baseband signal being carried to long-range position from the central position It sets, wherein compared with transmission higher radio frequency (RF) signal, be lost much lower.

In some embodiments, the analog-to-digital conversion in the digital-to-analogue conversion and downlink in uplink may be located on having There is the remote location of upconverter and low-converter, and emulator core is retained in center.

In some embodiments, emulator core is also located at remote location.In some embodiments, tester is wirelessly communicated It is remotely located with channel simulator, for example, in test cabinet, each close in more antennas.Wireless communication test Each of instrument and channel simulator combination are synchronous with other combinations of wireless communication tester and channel simulator.Some In embodiment, a kind of double border array is provided.

It in the embodiments described herein, will be referring to simulated channel.Simulated channel is by carrying out electronic control to signal It is emulated with the effect to the channel between first device (such as, base station or radio) and second device (such as, DUT) And simulated channel.For example, in real world environments, the RF signal of (such as, mobile phone) leaves from base station to wireless device It base station and rebounds from the metope of building and ground, so that RF signal will reach from different directions wirelessly in different time Device.Moreover, if wireless device relative in environment source or other objects movement, reach the RF signal of wireless device Frequency displacement can occur.This is referred to as Doppler frequency shift.It should be noted that term " RF " as used herein include but is not limited to microwave and Millimeter-wave frequency.

Space channel emulator described herein can be programmed for the copy in the signal from wireless communication tester Middle introducing detraction is to generate the signal emulated to the various detractions of the RF signal by real world dissemination channel.It can be with Space channel emulator is programmed for emulating Doppler frequency shift.With the channel effect for the downstream RF signals for being transmitted to DUT It is similar, the channel effect of the upstream rf signal received from DUT can also be emulated.That is, on uplink, space letter Road emulator can introduce detraction by the copy to the signal received from DUT come to the actual channel between DUT and base station It is emulated.

Other than the detraction introduced by (multiple) channel simulator, every antenna can be positioned to different arrival Angle and DUT communication.The array of antenna can be two-dimensional or three-dimensional, and the test space usually where the DUT Setting.

In some embodiments, the every antenna 12 in boundary arrays system is direct (that is, utilizing very short cable) Be connected to can be generated in desired frequency range and/or the broadband radio transmitter of receiving wide-band signal, receiver or Person's transceiver.Desired signal of communication is aggregated to the other end of communication link according to low-loss or loss-free mode, it should Communication link can be one or more wireless communication tester 68 or reference radio, the tester/radio Integrated digital emulation or even one or more other boundary arrays comprising another on-air radio communication means.

Therefore, when present document relates to wireless communication tester or communication test instrument, those skilled in the art are answered Understand, this tester only represents tester, reference radio, the radio of Digital Simulation or comprising on-air radio telecommunication Another boundary arrays of device.In some embodiments, wireless communication tester can send and receive what basis was used by DUT The signal of communication of communication protocol (such as, for example, Wi-Fi communication protocol or 3GPP long term evolution (LTE) agreement).

In some embodiments, by the associated RF up-conversion section output and input of traditional RF channel simulator under Frequency conversion section is moved to the indoor independently-powered module of test, and can use for example, it is directly attached by short RF cable To antenna.Power control and associated circuit can be directly applied at antenna port now, and base band/number is converted and imitative It can very be retained at concentrated position.

Fig. 7 is the block diagram of channel simulator system 61 between the distributed space applied to anechoic chamber,.At center 64, There is RF/ base band space channel emulator section 59 channel simulator core 70a, channel simulator core 70a to be configured to Detraction, which is introduced, from each of at least one transmission signal that wireless communication tester receives is used at least one to generate At least one impairment signal of each of a simulated channel.The shadow for the different sets that each transmission signal may be detracted It rings.This enable test operator to may include multipath fading and Doppler frequency shift multiple and different channel models in it is any One or more is emulated.At remote location 65, such as, in anechoic chamber, at least one simulated channel Each, upconverter 72 is configured to local oscillator LO signal and simulated channel from LO 76 in frequency mixer 74 Impairment signal mix to generate radio frequency rf signal.It should be noted that can be referred to by 10mega-Hertz reference signal etc. The frequency synthesizer of signal timing replaces local oscillator.Therefore, embodiment is not limited to the specific up-conversion being shown in FIG. 7 Circuit.

Although the remote location 65 can be another type it should be noted that anechoic chamber, is shown as remote location 65 Room, such as, reverberation chamber, or can not be room completely.Further, emulator core 70 can be it is completely flexible with Test operator is set to emulate any set for the channel condition for including multipath fading and Doppler frequency shift.

In more detail, Fig. 7 shows the wireless communication tester that emulator receiver 78 is coupled at center 64 68, which is in turn coupled to emulator core 70a.Emulator receiver 78 can be tested from wireless communication The RF signal that instrument 68 receives carries out down coversion and down-conversion signal is converted to digital form.Emulator core 70a can be with Detraction is introduced to one or more digital signal from emulator receiver 78, and sums impairment signal to produce The raw single compound impairment signal for each of multiple simulated channels.Signal from emulator receiver 78 is introduced Detraction test operator can be enable to emulate any kind of channel model.

For each simulated channel, can by digital analog converter (DAC) 80 by the output of emulator core 70a from number Signal is converted to analog signal.The output of DAC 80 may be at intermediate frequency (IF) or in base band.Can by filter 82 The output of DAC 80 is filtered and it is amplified by amplifier 84.For example, will be from amplification via cable The IF or baseband signal of device 84 are transferred to remote location.As referring to Fig.1, described by Fig. 5 and Fig. 6, since signal is in opposite Lower intermediate frequency is in base band, and therefore, the loss of signal on cable is in desired survey much smaller than the signal to be carried The case where the case where trying frequency, which is in the conventional system.

At remote location 65, amplifier 86 receives and amplification IF perhaps baseband signal and by IF or baseband signal Frequency mixer 74 is input to be mixed with LO signal to generate the output of RF signal.For simplicity, it is shown in FIG. 7 basic Up-converter circuit.Those skilled in the art will be appreciated that, it is possible to implement different circuits is to realize IF or base band Signal is to the up-conversion of RF, and the embodiment is not limited to the specific up-converter circuit being shown in FIG. 7.For example, can with by The synthesizer of the reference signals timing such as 10MHz reference signal replaces local oscillator 76.Alternatively, mixer It can also include the frequency multiplier (not shown) by lower frequency LO multiplied by the higher frequency signals that will be applied to frequency mixer 74.It should infuse Meaning, can be at remote location or center position generates LO signal.It can be by variable gain amplifier 88 come to RF signal It amplifies, for example, the variable gain amplifier 88 can be embodied as fixed gain amplifier and attenuator being connected in series. RF signal from amplifier 88 is fed to the antenna 12 of RF signal radiation to DUT 22.

Therefore, some embodiments include distributed channel analogue system 61.The distributed channel analogue system includes: emulation Device core, the emulator core are located at center 64, which is at least one transmission signal Detraction is introduced in each to generate at least one impairment signal for each of at least one simulated channel.Long-range At position 65, for each of at least one simulated channel, upconverter be configured to the impairment signal of simulated channel into Row up-conversion is to generate radio frequency (RF) signal.For example, by impairment signal 64 signal for being transferred to remote location 65 from the central position Path can be cable.

In some embodiments, it as being shown in FIG. 7, provides a kind of for executing in room to test system DUT Radio frequency test electromagnetic measuring system.In these embodiments, in the outside of room, emulator core 70a is configured at least One transmission signal each in introduce detraction with generate for each of at least one simulated channel at least one Impairment signal.Indoors, for each of at least one simulated channel, upconverter 72 is configured to receive local oscillator LO signal and the LO signal is mixed with the impairment signal of simulated channel to generate radio frequency rf signal.In one embodiment, Each simulated channel can have an antenna to receive RF signal and by the RF signal radiation to DUT 22.In remote location The room at place can be for example, anechoic chamber, or reverberation chamber.

It should be understood that those skilled in the art will be appreciated by, anechoic chamber, includes wall, floor and the ceiling of the room On RF absorber to absorb RF energy, and know that reverberation chamber includes naked reflecting barrier wall, floor and ceiling.Other rooms can Absorber is lined with part.As mentioned above, by emulator core be introduced into the detraction in signal may include amplitude weight, Time shift or other detractions.

Fig. 8 is the block diagram for the distributed channel analogue system 71 for being applied to the uplink signaling of anechoic chamber, the electric wave Darkroom includes: low-converter 90, at the low-converter 90 remotely located 65, for each at least one simulated channel A, which is configured to RF signal mix the local oscillator LO signal from LO 92 to generate and be used to emulate The down-conversion signal of channel.As mentioned above for Fig. 7, LO 92 can with by reference signal timing frequency synthesizer or Person, which will generate, to carry out generation applied to low-converter 90 in the other known method for carrying out the signal of down coversion to the RF signal received It replaces.LO 92 can be located at center position or remote location.For example, in some embodiments, it can leisure in future center The LO signal of LO at position is carried to long-range in the same cable that the IF from remote location is carried to center Position, in the center position, for example, can separate and combine IF and LO signal by optional duplexer.In center 64 Place, RF/ base band space channel emulator section 69 have emulator core 70b, and the emulator core 70b is from remote location 65 Detraction is introduced in the copy of each of at least one down-conversion signal received to generate at least one impaired receives and believe Number.

Emulator transmitter 94 can be couple by the impaired signal that receives, which will be on impairment signal Frequency conversion is RF and the impaired signal received is transmitted to wireless communication tester 68.Although being answered it should be noted that Fig. 8 is shown For the distributed channel analogue system of anechoic chamber, but in some embodiments, remote location 65 is reverberation chamber or complete It can not be room entirely.

In more detail, Fig. 8 shows antenna 12 and receives electromagnetic signal (radio wave) from DUT 22 and receive this RF signal be coupled to the amplifier 96 that can be low-noise amplifier (LNA) and/or variable gain amplifier (VGA).It will put The output of big device 96 down-converts to intermediate frequency (IF) or base band.RF is believed to achieve it, RF signal can be fed to Number frequency mixer 98 mixed with the LO signal from LO 92 is to generate in intermediate frequency (IF) or in the signal of base band.Filtering Device 100 is optionally filtered to the signal and amplifier 102 carries out it before the signal is transferred to center It is further amplified.Since signal is in IF or base band, by transmitting signal between remote location 65 and center 64 The loss of caused conventional system of the loss lower than Fig. 1, Fig. 5 and Fig. 6.At center 64, can by amplifier 104 To from remote location 65 IF or baseband signal amplify and be fed into and export digital signal to emulator The analog-digital converter 106 of core 70b.

Emulator core 70b subtracts the copy introducing of the down coversion digital signal received from analog-digital converter (ADC) 106 It damages to generate output to the output signal of emulator transmitter 94.I.e., it is possible to be replicated by emulator core 70b from ADC 106 The down-conversion signal that receives and it can use different one or more kinds of detractions to detract to each copy.It should infuse Meaning, to individually being detracted to induction signal from multiple remote nodes 90 in (multiple) channel simulator core, and It sums before combination signal is input to transmitter 94 to obtained signal.

Therefore, in some embodiments, a kind of distributed channel analogue system 71 is provided.In remote location 65, for Each of at least one simulated channel, low-converter are configured to RF signal mix local oscillator LO signal to generate Down-conversion signal for simulated channel.At center 64, emulator core 70b is configured to believe from least one emulation Detraction is introduced in each of at least one down-conversion signal that road receives to generate at least one impaired reception signal.? Center position can be set communication test instrument and configure the communication test instrument to handle at least one impaired reception letter Number.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT in room.In room Interior, for each of at least one simulated channel, low-converter 90 is configured to by local oscillator LO signal and via day The RF signal that line is received from DUT is mixed to generate the down-conversion signal for simulated channel.In the outside of room, emulator core 70b is configured to introduce detraction from least one simulated channel in the copy of at least one down-conversion signal received to generate At least one impaired reception signal.Room at remote location 65 can be for example, anechoic chamber, or reverberation chamber.

It should be noted that by the way that power amplification to be directly moved to antenna 12, such as shown in figures 7 and 8, same amount of peak value Power will generate much better than signal at DUT 22.On the contrary, being moved to by the way that amplification and down coversion will be received close to antenna, connect Receiving device sensitivity can greatly improve.It is designed as being used for expected aerial path loss conditions rather than use by outputting and inputting RF In conduction test, desired amplification can directly be established in the radio at remote location.Moreover, because can be by changing Become the gain of amplification to maintain power control, therefore, any non-linear emitter/receiver that is automatically included in amplifying stage is matched Additional uncertainty will not be introduced in the calibration set and except calibration instrument.

By the way that up-conversion and down coversion are moved to remote location, can be replaced with more low-loss path IF and LO with The associated high loss of longer RF cable trace.The operation can also be applied to generate by using existing RF channel simulator The frequency communication test frequency more much higher than the frequency that these instruments are traditionally supported.Thus, for example, can be at remote location The output of the channel simulator of 6giga-Hertz is up-converted into 60GHz.

Fig. 9 is the alternate embodiment of the distributed channel analogue system 81 of the DUT for downlink transfer into anechoic chamber, Block diagram.In this embodiment, emulator core 70a is located at the RF at center 64 to digital space channel simulator part In 79, and digital stream is exported for each simulated channel.DAC 80 is in the remote transmitter operated as vector signal generator At remote location 65 in 83.Therefore, in this embodiment, at least one transmission letter is generated at wireless communication tester 68 Number.The emulator receiver 78 in center position is couple by the transmission signal from wireless communication tester 68.The emulation Device receiver 78 is coupled to emulator core 70a for signal is transmitted, and emulator core 70a introduces detraction in the transmission signal. This detraction may include the amplitude weighting and time shift to each of transmission signal.

The output of emulator core 70a is the digital stream for being transferred to the digital analog converter (DAC) 80 in remote location, In the example of Fig. 9, which is anechoic chamber,.The output of DAC 80 is can be filtered by filter 82 and by putting The analog signal that big device 86 amplifies.The analog signal amplified, filtered and the LO from LO 76 are believed in frequency mixer 74 Number mixing signal to be up-converted to the RF signal for being amplified by amplifier 88 and being transmitted to antenna 12.Antenna 12 is by RF signal amplitude It is mapped to DUT 22.Those skilled in the art will be appreciated that, it is possible to implement the modification of circuit 83 with realize digital-to-analogue conversion, on Frequency conversion and amplification.Embodiment is not limited to the exemplary circuit being shown in FIG. 9.It is possible to further with by reference signal timing Direct synthesizer replaces LO 76.In some embodiments, LO signal from LO 76 itself is being applied to frequency mixer Higher frequency signals can be up-converted to by multiplication before 74.

Therefore, in some embodiments, a kind of distributed channel analogue system 81, distributed channel emulation system are provided System 81 has the emulator core 70a in center 64 and for each of at least one simulated channel, including Signal projector 83 in remote location 65.In other words, in this embodiment, emulator core is located at center 64 Place, and at emulator transmitter 83 remotely located 65.

Figure 10 is the substitution implementation for the distributed channel analogue system 91 from the DUT uplink in anechoic chamber, 14 The block diagram of example.The embodiment is similar with the embodiment of Fig. 8, the difference is that ADC 106 be located at it is remote in remote receiver 93 At journey position 65.Therefore, antenna 12 receives the RF signal from DUT 22 and amplifier 96 amplifies it.In frequency mixer The RF signal of amplification is mixed with the LO signal from LO 92 to generate the down coversion analog signal for being used for simulated channel in 98. Filter 100 is filtered the signal and amplifier 102 amplifies it.ADC 106 is by the signal through filter and amplification Digital signal is converted to generate the digital signal for simulated channel.Those skilled in the art should be understood that can be with The modification of implementing circuit 93 is to realize analog-to-digital conversion, down coversion and amplification.Embodiment is not limited to the example being shown in FIG. 10 electricity Road.It is possible to further replace LO 92 with the direct synthesizer by reference signal timing.In some embodiments, come LO signal itself from LO 92 can up-convert to higher frequency signals by multiplication before being applied to frequency mixer 98.

Emulation in digital data transmission to the RF digital space channel simulator part 89 being located at center 64 Device core 70b can replicate the digital signal at the center 64.Digital signal and its replica signal are carried out respectively It detracts and is distributed to multiple emulator transmitters 94.Detraction may include amplitude weighting and time shift.Emulator transmitter Impairment signal is transmitted to wireless communication tester 68 by 94.It should be noted that from multiple in (multiple) channel simulator core Remote node 93 individually detracts induction signal, and to obtained before it will combine signal and be input to transmitter 94 Signal is summed.

Therefore, in some embodiments, a kind of distributed channel analogue system 91, distributed channel emulation system are provided System 91 has the emulator core 70b in center 64 and for each of at least one simulated channel, including ADC and low-converter in remote location 65.In other words, in this embodiment, emulator core 64 is located at center Place, and at emulator receiver 93 remotely located 65.

In the embodiment of fig. 9 and figure 10, radio is entirely simulated (for the DAC of downlink, upconverter and power Amplifier, and DAC, low-converter and low-noise amplifier for uplink) far from center 64, and emulator core 70 are located at center 64.The emulation of the center number of transmitter and receiver and digital analog converter or analog-to-digital conversion device (DAC/ADC) communication between is completed in a digital manner, and only concentrates reference signal (for example, 10MHz) or LO letter It number may be used to all distributed radios to keep in lock condition appropriate and control (multiple) working frequency.It should infuse Meaning, different LO can be used for uplink and downlink.

Any digital waveform can be substantially converted to desired RF signal (vice versa) by distributed radio Vector signal generator or analyzer.The digital signal for being transferred to distributed radio in the uplink includes that will come from nothing The digital representation of the combination RF signal of all inputs of line communication test instrument, the wireless communication tester is for leading to indoor spy Determine each path of antenna.Equally, the signal received on this antenna is digitized and is returned it in uplink Channel simulator core.

It should be noted that the distributed component at remote location and the communication between remaining emulation component of center position may In IF, perhaps for base band at IF or base band, the loss between component can be much smaller than the RF path loss of typical cable.And And in uplink configuration, amplifier 96 couples directly to antenna, to minimize or eliminate to additional low noise amplification Needs.

It should be noted that although each of Fig. 7 to Figure 10 illustrates only a direction, i.e. uplink or downlink chain Road, it should be appreciated that, those skilled in the art will be by using antenna 12 and corresponding upconverter and lower change Isolation circuit between frequency device implements both direction.This isolation circuit may include: duplexer, isolator or even Individually transmission and receiving antenna.Specific isolation circuit can depend on the type of tested communication protocol.For example, Wi-Fi may A type of isolation circuit is needed, and LTE may need another type of isolation circuit.

The control between each transmitter or receiver at central channel emulator core 70a, 70b and remote location 65 Signal processed can be provided by individual digital mechanism (such as, cable perhaps optical fiber) or even by base band or IF number Signal is carried to remote radio module or above mentions from the cable that remote radio module carries base band or IF digital signal For.Moreover, power for operating remote transmitter and receiver can be locally applied to each radio or by IF or The cable carrying of person LO carrying.

Figure 11 is the block diagram of the embodiment of distributed channel analogue system 101, the distributed channel analogue system 101 tool Have: emulator receiver 78, the emulator receiver 78 are located at center 64, and the emulator receiver 78 is in RF to number In convenor section 99；And emulator core 70c, DAC 80 and upconverter, emulator core 70c, DAC 80 and on At frequency converter remotely located 65, it to be used for each simulated channel.Therefore, in this embodiment, the signal vehicle such as cable The digital signal of multiple emulator receivers 78 from center position is carried to RF output channel simulator part by 110 103 at least one emulator core 70c.Signal vehicle 110 can be unit cable or multi-cable.Emulate core 70c Output be from multiple emulator receivers 78 impairment signal combination impairment signal.Detraction may include amplitude weighting And/or time shift and/or other detractions.

The output of emulator core 70c is input to including DAC 80, filter 82, amplifier 86,74 and of frequency mixer The transmitter chain of VGA88, the transmitter chain operate as described with reference to Figure 9.The up-conversion that will be exported by VGA 88 Amplified signal is coupled to antenna 12, and the antenna 12 is by RF signal radiation to DUT 22.

Therefore, in some embodiments, a kind of distributed channel analogue system 101, distributed channel emulation are provided System 101 has at least one emulator receiver 78 at center 64, also, at least one simulated channel Each, has emulator core 70c, DAC and upconverter in remote location 65.

Figure 12 is the block diagram of the embodiment of distributed channel analogue system 111, the distributed channel analogue system 111 tool Have: emulator transmitter 94, the emulator transmitter 9 are located at center 64, which turns in number to RF In exchanger sections 109；And the emulator core 70d of RF input channel emulator section 113, emulator core 70d are located at At remote location 65, it to be used for each simulated channel.In this embodiment, the signal vehicle such as cable 110 are comfortable in the future long-range The digital signal of multiple emulator core 70d at position is carried to multiple emulator transmitters 94.It should be noted that in (multiple) letters To individually being detracted to induction signal from multiple remote nodes 113 in road emulator core, and it is defeated signal will be combined It sums before entering to transmitter 94 to obtained signal.

In operation, for each simulated channel, receive RF signal from antenna 12, and amplifier 96 to the RF signal into Row amplification.By will be mixed through amplification RF signal with the LO signal from LO 92 from amplifier 96 in frequency mixer 98 with Down coversion is carried out through amplification RF signal to from amplifier 96.Filter 100 is filtered down-conversion signal, amplifier 102 pairs its amplify and it is converted to digital form from analog form by ADC 106.The number that will be exported by ADC 106 Signal is coupled to emulator core 70d.Emulator core is carried out by detracting come the duplicate to digital signal and digital signal Detraction is to generate multiple impaired output signals, the impaired output signal and pair from other emulator core 70d (not shown) Induction signal combines and is carried to multiple emulator transmitters in center 64 by signal vehicle 110.It will be from emulator These signals that transmitter 94 receives are coupled to wireless communication tester 68.

Therefore, in some embodiments, a kind of distributed channel analogue system is provided, the distributed channel analogue system Each of there is at least one emulator receiver 78 at center 64, also, be directed at least one simulated channel, There is emulator core 70c, DAC and low-converter in remote location 65.

In the configuration of Figure 11 and Figure 12, the Digital Signal Processing component of channel simulator is in the distribution of remote location 65 In formula node, so that each node be enable to generate it between the test space where wireless communication tester 68 and DUT 22 The simulated channel of oneself.Then, the concentrated part of channel simulator only includes for combined digital signal and from number to mould Intend being converted to RF the component and any centralized control and LO and/or reference signal to connect with communication test instrument interface.

However, it should be noted that can also by distributed system remote location individual module come generate LO and LO is shared between module, so that the case where the signal is not used in the RF connection between channel simulator and communication test instrument Outdoor is transferred to without the signal down.

Can by power cable specific to selected high-speed interface (for example, MXI-2, HSSI, customization etc.) or Fiber optic cables come carry between center and remote location transmit real-time streams waveform digital communication, to eliminate RF interaction associated with power cable and shielding problem.In any above embodiment, it can be communicated with base band or IF Either digital information is transferred to DAC or replaces the RF connection between communication test instrument and channel simulator from ADC transmitting.

It should be noted that can be with the embodiment of constitutional diagram 7 and Fig. 8 to provide bilateral system.It similarly, can be with constitutional diagram 9 and figure 10 embodiment is to provide bilateral system.Furthermore, it is possible to which the embodiment of constitutional diagram 11 and Figure 12 are to provide bilateral system.

Figure 13 is the block diagram for carrying out the bidirectional nodes 121 of channel simulator on the downlink and uplink, all In remote location 65, such as, anechoic chamber, 14.Software definition or based on chipset communication test instrument 112 mentions For the transmission signal for downlink and reception is used for the output signal of uplink.It will be from communication test instrument 112 Transmission signal is coupled to emulator core 70e, which subtracts the copy introducing at least one for transmitting signal Damage is to generate the impairment signal for simulated channel.

Impairment signal from emulator core 70e is coupled to the digital signal of transmitter 114, wherein by the number Signal is converted to analog signal, up-converts to RF and amplify.In the future the amplification RF signal of spontaneous emitter 114 be sent to signal every From device 118, which couples antenna 12 for the RF signal of amplification, while it is upper to prevent the RF signal of amplification from entering The receiver 116 of walking along the street diameter.Antenna 12 is by RF signal radiation to DUT 22.It should be noted that the type of signal isolator 118 can take Certainly in the communication protocol of DUT 22.It also should be noted that communication test instrument 112 can generate digital communication signal at base band, and It is non-that RF signal is generated as in traditional wireless communication tester.Therefore, the transmission port of communication test instrument 112 and receiving end Without including the RF components such as RF isolator between mouthful.

On uplink, antenna 12 receives RF signal from DUT 22 and the RF signal for receiving this is coupled to isolation Device 118.The RF signal received is couple receiver 116 by the isolator 118, while preventing the RF signal received from entering hair Emitter 114.Receiver 116 is amplified to the RF signal received and down coversion, and down-conversion signal is converted to number Form.By the output coupling of receiver 116 to emulator core 70f.Emulator core 70f is to receiving from receiver 116 Signal is detracted, and can also be generated the duplicate of the signal and be detracted to it, is coupled to communication survey to generate Try at least one impairment signal of instrument 112.

As in figure 13 illustrates, in some embodiments, the impairment signal from emulator core can be transmitted to Communication test instrument and the impairment signal can also be sent to additional node identical with the node in Figure 13, in the Figure 13 Node waits for combining with the impairment signal of the emulator from these additional nodes.Equally, the node of Figure 13, which receives, comes from building-out section The impairment signal of point and the signal that the impairment signal is added to the emulator core 70f from Figure 13.Also by synchronization signal It is coupled to the node in Figure 13 and is coupled to additional node to ensure the letter generated by the communication test instrument in each node Number have identical content and timing.Moreover, by from the control signal distributions that user interface and controller receive in figure 13 Node and additional node allow the user to the communication test instrument of control node.

Figure 14 is the block diagram for carrying out the two-way dual polarization system of channel simulator on the downlink and uplink, entirely Portion is included in remote location 65, such as, anechoic chamber,.Software definition or based on chipset wireless communication tester 112 provide the transmission signal for downlink to emulator core and receive from emulator core for the defeated of uplink Signal out.Emulator core 70g is couple by the transmission signal from wireless communication tester 112, emulator core 70g can With to two transmit each of signal introduce it is impaired to generate two signals for being used for two simulated channels, each channel with Different polarization is corresponding.In other words, one of each of two signals two kinds of polarization orthogonal with can be is corresponding.

Each of two signals are fed to one of two transmitters 114a and 114b.Each transmitter will Its received signal is converted to analog form, by signal up-convert to RF and by RF signal be coupled to two isolator 118a and One of 118b.Its received RF signal is transmitted to the vertical polarized antenna element of antenna 12 by signal isolator 118a. Its received RF signal is transmitted to the horizontally-polarized antenna element of antenna 12 by signal isolator 118b.The ordinary skill of this field The not like-polarized example that personnel, which should be understood that vertical polarization, and horizontal polarization is to transmit.

For uplink, each of two cross-polarized antennas elements of antenna element 12 will be received from DUT 22 To RF signal be coupled to isolator 118a and 118b.The RF signal received is couple receiver by isolator 118a and 118b 116a and 116b.The RF signal being respectively received is amplified and down-converts to the RF signal received by each receiver 116 IF signal or baseband signal.Each receiver has the ADC that received down-conversion signal is converted to digital form.It will Being input to for receiver 116 can introduce different detractions to the signal received and couple channel radio for impairment signal Believe the emulator core 70h of tester 112.

As above referring to Fig.1 3 discuss, can be by the impairment signal of the emulator core 70h of the node in Figure 14 It is combined with the correspondence impairment signal from additional node and is input to communication test instrument 112.It can also will come from Figure 14 In the impairment signal of emulator core 70h of node be sent to additional node with impaired with the emulator from additional node Combination as class signal.The node that can also couple synchronization signal in Figure 14 and be coupled to additional node with ensure by The signal that communication test instrument in each node generates has identical content and timing.Moreover, will be from user interface and controller Node and additional node of the control signal distributions received into Figure 14 allow the user to the communication test instrument of control node.

Therefore, some embodiments provide complete radio and channel behind the every antenna 12 at remote location Emulator, the complete radio and channel simulator can execute single polarization or dual-polarized institute with different angle of arrival There are radio communication and multipath emulation.Radio and channel simulator can be completely by processor (such as, Digital Signal Processing Device) software that executes is implemented, or can implement according to the combination of hardware (such as, using specific hardware) and software.

Therefore, in the embodiment of Figure 13 and Figure 14, for desired radio communication protocol, by communication test instrument and Channel simulator is merged into the radio of single possible software definition.On the uplink carry out analog-converted before and It, will be for the expectation channel for the associated path for leading to the test space before being decoded on uplink to digitized signal Simulation Application is in digital communication.Digital signal and LO synchronization signal and control signal can be shared between distributed node, And single control interface can be back to centralized PC or other control/user interfaces.

Even if chipset embodiment for implement communication test instrument or for being implemented by communication test instrument it is wireless In the case that protocol component is more practical, by can by currently have basic decline/channel simulator ability existing communication survey It tries instrument and carries out the smallest modification to realize chipset embodiment.Main task is to keep protocol component (software or chipset) same Step so that protocol component simultaneously generate identical numerical data, and then by final digital signal be converted to RF it Preceding each independent path application number decline to final digital signal is led to.

On downlink side, changed before each radio reception to digitalized data by digital channel emulation Digitalized data.Can be by digitized result summation together, and handled as single overall result.Final result is, under On line link side, each chipset in each node will independently create signal using appropriate synchronize, and in uplink In link side, the digitized result from each receiver will be combined and be fed into connecing for only one chipset Device is received to be decoded the agreement received with the summation using the fading effect from all simulated channels.

Since distributed communication tester emulates single transceiver endpoint, signal should still have There is common end.In emitting side, which such as can configure transmission identical data for each node and keep them same It is simple as step.However, on the receiving side, the behavior of radio receiver depends on whole signals from all nodes.For The some parts of fully digitalization embodiment, the signal processing received can be complete in each node before being combined At, and be directed to the embodiment based on chipset, it should the aggregate signal at a node, and then by one single chip collection into Row sampling is to handle the signal eventually received.Alternatively, multiple chipsets can sample aggregate signal and will The some compound means or summation of the result of each chipset output are for determining the signal eventually received.

Figure 15 is the block diagram with the example anechoic chamber, of DUT 22 and Duo Gen antenna 12.Every antenna 12 may include not Like-polarized antenna element.It should be noted that DUT 22 can be located relative to, antenna 12 rotates or that moves in other ways determines In the system of position.Be connected to every antenna 12 is the bi-directional combination 120 of communication test instrument 68 and channel simulator 70.Pass through cable The output (output can be baseband signal) for combining 120 is passed to the room being remotely located and passed from the room of long range positioning by 122 Out to the center of offer user interface.The communication for controlling each combination 120 can also be transmitted by cable 122 to survey Try the control signal of instrument and channel simulator.It should be noted that the configuration for combining 120 is shown as in anechoic chamber, but one In a little embodiments, for example, combination 120 can not be located in room, or it can be located in reverberation chamber.Also it should be noted that In some embodiments, antenna 12 can be single-polarized antenna or dual polarized antenna.

By entering every antenna of boundary arrays in the radio for the software definition for being designed for air communication, with Mean the radio in each node commonly used in the associated relatively low path loss of short distance length of the test Other ability is not needed to solve associated path loss.Herein, node refers to wireless communication tester and channel simulator The combination of device.

In one embodiment, system 121 becomes the radio communicated simultaneously with a large amount of radio (array) (DUT).It should be noted that the embodiment defined for complete software, the quantity of MIMO stream is only by simulating process resource needed for it Limitation.In the configuration of Figure 16, the combination of channel simulator and communication test instrument can be by remote location or centre bit The signal for setting place is synchronous.

It should be noted that in the above-described embodiments, local oscillator (LO) can be located at center position and be distributed to long-range Frequency mixer or LO at position can be located adjacent to each frequency mixer at remote location.In some embodiments, Ke Yi LO signal is superior to the progress of LO signal before being input to long-range upconverter or the respective mixers of low-converter, this will lead to LO frequency is far below desired operation RF.For different simulated channels, LO signal frequency can also be identical, or be directed to Different simulated channels can be different (for example, for LTE supported polymerisation and similar approach).

Further, the LO signal frequency in uplink can be different from the LO signal frequency on downlink.As above Face description, can by using duplexer, circulator or isolator by LO signal be coupled in carry up-conversion signal or On the same cable of person's down-conversion signal.Moreover, LO signal can be reference signal, for example, 10MHz reference clock, Ge Gefen The front end of cloth is converted to target LO frequency to be mixed in respective mixers 74,98.

Figure 16 is showing for the embodiment of the double border array for being emulated to the total space communication between two endpoints It is intended to.Double border array includes for example, the first boundary arrays 126 and the second boundary array 128 connected by number connection 130. As mentioned above, the distributed node on side (either two sides) can be connected to reference radio or multiple to be measured Device, in multiple test system, it is expected that carrying out complete multiport network Simulation Evaluation (for example, large-scale MIMO). Optionally, as described above, distributed node can be implemented at one end and implemented in centralized node in the other end.? In Figure 16, channel simulator 132 and 133 by its it is correspondingly received to signal and transmission signal introduce detraction come to channel It is emulated.For example, DUT 22 can be base station and DUT 23 can be radio telephone.In this case, in downlink chain On the road, base station DUT 22 generates the signal of communication to be passed for transporting to radio telephone DUT 23.On uplink, radio telephone DUT 23 generate the signal of communication to be passed for transporting to base station DUT 22.On the uplink, channel simulator 132 and 133 pair comes from base station The downlink signal of DUT 22 introduces detraction and on uplink, and channel simulator 132 and 133 pair comes from radio telephone DUT 23 uplink signal introduces detraction.

In some embodiments, antenna 13 can be replaced with the DUT for being connected directly to channel simulator 133.Some It, can be with DUT come both alternate antenna 13 and antenna 12 in embodiment.It therefore, in some embodiments, can will be each wireless The array of electric (for example, cell phone) is connected to the array of each channel simulator node, and (array transfers and has DUT (example Such as, large-scale MIMO base station) boundary arrays be connected with each other), or be connected to other radio (for example, for mesh network survey Examination) each node another array.Moreover, in some cases, for example, when DUT is connected directly to channel simulator, letter The configuration of road emulator 132 and/or 133 can not be included in anechoic chamber,.

Therefore, in some embodiments, another group of remote node one group of remote node being connected at different location.? In some embodiments, these remote nodes can be made of the up/down frequency converter assembly routed by central channel emulator.? In some embodiments, communication be can be with the digital communication between transmitter and/or the node of receiver assembly.In some realities It applies in example, remote node can also include channel simulator device assembly.In some embodiments, the set of remote node is carried out straight Connect interconnection.In some embodiments, remote node is connected to antenna.In some embodiments, remote node includes indoors. In some embodiments, some or all nodes in remote node are connected to wireless communication device.

Figure 17 is the flow chart for implementing the example process of measuring system.The process includes: the multiple nodes of setting, respectively A node includes the channel simulator for being configured to generate the communication test instrument of signal of communication and be configured to emulate channel It combines (frame S100).The process further comprises: setting is configured so that family can control at least one of multiple nodes section The user interface (frame S102) of point.

Figure 18 is the flow chart for implementing the another exemplary process of measuring system.The process includes: the multiple sections of setting Point, each node have the channel simulator that is configured to receive signal of communication and be detracted to the signal of communication and are configured to Receive the combination (frame S104) of the communication test instrument of impaired signal of communication.The process further comprises: setting is configured so that family The user interface (frame S106) of at least one node in multiple nodes can be controlled.

Figure 19 is the flow chart for implementing the example process of measuring system.The process includes: to set in center position Set the emulator core (frame S108) for being configured to introduce detraction in the transmission signal to generate the impairment signal for simulated channel. The process further comprises: setting is configured to carry out up-conversion to impairment signal to generate the upper change of RF signal at remote location Frequency device (frame S110).

Figure 20 is the flow chart for implementing the another exemplary process of measuring system.The process includes: in remote location Place setting low-converter, for each of at least one simulated channel, the low-converter be configured to radio frequency rf signal into Row down coversion is to generate down-conversion signal (frame S112).The process further comprises: being configured under in center position setting Detraction is introduced in frequency variation signal to generate the impaired emulator core (frame S114) for receiving signal.

Therefore, some embodiments include implementing the distributed channel analogue system of down channel, distributed channel emulation System includes: emulator core, which is located at center position, which is at least one biography Detraction is introduced in each of defeated signal with generate for each of at least one simulated channel at least one is impaired Signal.The system includes: upconverter, the remotely located place of the upconverter, for every at least one simulated channel One, which is configured to mix local oscillator LO signal with the impairment signal of simulated channel to generate radio frequency letter Number.

In some embodiments, which includes: at least one impairment signal to be transferred to from emulator core The signal path of upconverter at remote location.In some embodiments, which includes: communication test instrument, which surveys Examination instrument is located at center position, which is configured to generate at least one transmission signal.In some embodiments, remotely Position is in test cabinet and center is outside test cabinet.In some embodiments, the system further include: digital analog converter, it should The remotely located place of digital analog converter, for each of at least one simulated channel, the digital analog converter is by impaired letter Number be converted to the analog signal to mix with LO signal.

In some embodiments, a kind of distributed channel analogue system for implementing up channel is provided.In remote location Place, for each of at least one simulated channel, low-converter is configured to mix local oscillator LO signal and RF signal It closes to generate the down-conversion signal for simulated channel.At center 64, emulator core configuration be from least one Detraction is introduced in each of at least one down-conversion signal that simulated channel receives to generate at least one impaired reception Signal.

In some embodiments, which includes: signal path, the signal path center and remote location it Between, upconverter of the signal path for being transferred at least one impairment signal from emulator core at remote location. In some embodiments, which includes: communication test instrument, which is located at center position, the communication test instrument It is configured to handle at least one impaired reception signal.In some embodiments, remote location is in test cabinet and center exists Outside test cabinet.In some embodiments, which further comprises: digital analog converter, and the digital analog converter is remotely located Place, for each of at least one simulated channel, which is converted to digital signal for down-conversion signal.

In some embodiments, a kind of radio frequency downlink test for being executed in room to test system DUT is provided Electromagnetic measuring system.It detracts in the introducing in each of at least one transmission signal that is arranged to of outdoor to generate The emulator core of at least one impairment signal for each of at least one simulated channel.Indoors, at least Each of one simulated channel, upconverter be configured to receive local oscillator LO signal and by the LO signal and emulation The impairment signal of channel is mixed to generate radio frequency rf signal.

In some embodiments, which further comprises: antenna, for each of at least one simulated channel, The antenna configuration is transmission RF signal.In some embodiments, room is one of anechoic chamber, and reverberation chamber.In some implementations In example, detraction includes at least one of amplitude weight and time shift.In some embodiments, which includes: digital analog converter, The digital analog converter is in the outside of room, and for each of at least one simulated channel, which will be from emulation The impairment signal of device core is converted to analog form from digital form.In some embodiments, which includes: that variable gain is put Big device, indoors, for each of at least one simulated channel, which matches the variable gain amplifier It is set to adjustably amplification RF signal.

In some embodiments, the impairment signal mixed with LO signal is intermediate-frequency IF signal.In some embodiments, with LO The impairment signal of signal mixing is baseband signal.In some embodiments, which further comprises: digital analog converter DAC, should Indoors, for each of at least one simulated channel, digital analog converter DAC is configured to will be by by digital analog converter DAC It damages signal and is converted to analog form from digital form, so that believing the analog form of impairment signal and LO in upconverter Number mixing.

In some embodiments, a kind of radio frequency uplink test for being executed in room to test system DUT is provided Electromagnetic measuring system.The system includes: low-converter, the low-converter indoors, at least one simulated channel Each, the low-converter be configured to mix local oscillator LO signal with the RF signal received via antenna from DUT with Generate the down-conversion signal for being used for simulated channel.The system further comprises: emulator core, and the emulator core is in the outer of room Portion, the emulator core configuration are in each of at least one down-conversion signal received from least one simulated channel Middle introducing detraction is to generate at least one impaired reception signal.

In some embodiments, room is one of anechoic chamber, and reverberation chamber.In some embodiments, the system is into one Step includes: antenna, and the antenna is for each of at least one simulated channel.In some embodiments, detraction includes amplitude At least one of weighted sum time shift.In some embodiments, which includes: variable gain amplifier, which puts Indoors, for each of at least one simulated channel, the variable gain amplifier is in the RF signal received for big device Adjustably amplify RF signal in path.In some embodiments, down-conversion signal is in medium-frequency IF.In some embodiments, Down-conversion signal is in base band.In some embodiments, which further comprises: digital analog converter ADC, the digital analog converter Indoors, for each of at least one simulated channel, digital analog converter ADC is by down-conversion signal from simulation shape by ADC Formula is converted to digital form.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT in room.In room Interior, for each of at least one simulated channel, emulator core configuration is each at least one transmission signal A middle introducing detraction is to generate impairment signal.Radio frequency transmitter is configured to mix local oscillator LO signal with impairment signal To generate radio frequency rf signal.

In some embodiments, room is one of anechoic chamber, and reverberation chamber.In some embodiments, detraction includes vibration At least one of width weighted sum time shift.In some embodiments, which includes: antenna, at least one simulated channel Each of, which is by RF signal radiation to DUT.In some embodiments, at least one simulated channel Each of, RF transmitter includes the digital analog converter that impairment signal is converted to analog form from digital form.Some In embodiment, RF transmitter includes the variable gain amplifier for being configured to amplification RF signal.In some embodiments, the system packet Include: communication test instrument, the communication test instrument are configured to generate at least one transmission in the outside of anechoic chamber, the communication test instrument Signal.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT in room.This is System includes: receiver, the receiver indoors, for each of at least one simulated channel, the receiver be configured to by Local oscillator LO signal is mixed with the radio frequency rf signal received from antenna to generate the down-conversion signal for simulated channel. The system further comprises: emulator core, and indoors, which is in down-conversion signal to the emulator core Each of at least one copy in introduce detraction to generate at least one output signal.

In some embodiments, room is one of anechoic chamber, and reverberation chamber.In some embodiments, detraction includes vibration At least one of width weighted sum time shift.In some embodiments, which further comprises: antenna, imitative at least one Each of true channel, the antenna configuration are to receive RF signal from DUT.In some embodiments, which further comprises: Multiple transmitters, one in the outside of room, each multiple output signals of transmitter receipt of multiple transmitter.In some realities Apply in example, which includes: communication test instrument, the communication test instrument in the outside of room, the communication test instrument for receiving and Test multiple output signals.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT in room.In room Interior, for each of at least one simulated channel, the first emulator core configuration is to draw at least one transmission signal Enter detraction to generate impairment signal, and transmitter is configured to being converted to impairment signal into the radio frequency letter to by antenna transmission Number.

In some embodiments, room is one of anechoic chamber, and reverberation chamber.In some embodiments, detraction includes vibration At least one of width weighted sum time shift.In some embodiments, which further comprises: communication test instrument, which surveys Try instrument indoors, for each of at least one simulated channel, which is configured to at least one transmission letter It number is emulated.In some embodiments, which further comprises: receiver, the receiver indoors, at least one Each of simulated channel, the receiver are configured to receive radio frequency rf signal from antenna and turn the RF signal received It is changed to down-conversion signal；And the second emulator core, the second emulator core are used at least one in down-conversion signal Detraction is introduced in each of copy to generate at least one output signal.In some embodiments, indoors, at least Each of one simulated channel, the configuration of communication test instrument receive and test at least one output signal.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT in room.In room Interior, for each of multiple simulated channels, the first emulator core configuration is each at least one transmission signal A middle introducing detraction is to generate the first impairment signal and the second impairment signal.Equally indoors, first transmitter is configured to basis First polarization is converted to the first impairment signal to the first radio frequency rf signal by antenna transmission, and second transmitter is configured to The second impairment signal is converted to the 2nd RF signal by antenna transmission according to the second polarization.

In some embodiments, room is one of anechoic chamber, and reverberation chamber.In some embodiments, detraction includes vibration At least one of width weighted sum time shift.In some embodiments, which further comprises: communication test instrument, which surveys Try instrument indoors, for each of at least one simulated channel, communication test instrument configuration transmits signal at least one It is emulated.In some embodiments, every antenna includes the polarized antenna element of a pair of orthogonal.

In some embodiments, which further comprises following device, which indoors, emulates at least one Each of channel: the first receiver, first receiver are configured to receive the first RF signal from antenna according to the first polarization And the first RF signal for receiving this is converted to the first down-conversion signal；Second receiver, the second receiver are configured to The 2nd RF signal is received from antenna according to the second polarization and the 2nd RF signal from antenna is converted into the second down coversion letter Number；And the second emulator core, the second emulator core be used for the first and second down-conversion signals at least one is secondary Different delay extensions is introduced in each of this to generate at least one output signal.In some embodiments, the system Further comprise: wireless communication tester, the wireless communication tester indoors, for each at least one simulated channel A, which is configured to receive and test at least one output signal.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT.The system packet Include: multiple nodes, each node have the communication test instrument for being configured to generate signal of communication and are configured to emulate channel Channel simulator combination.

In some embodiments, the communication test instrument in multiple nodes synchronizes in time.In some embodiments, lead to Letter tester synchronizes in terms of content.In some embodiments, each combination further comprises the channel simulator for being coupled to combination Antenna.In some embodiments, combination, antenna and DUT are located at interior.In some embodiments, room is anechoic chamber, and mixes Ring one of room.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT.The system packet Include: multiple nodes, each node have the channel simulator that is configured to receive signal and be emulated to channel and are configured to Receive the combination of the communication test instrument of signal of communication.

In some embodiments, communication test instrument synchronizes in time.In some embodiments, each combination is further wrapped Include the antenna for being coupled to channel simulator.In some embodiments, at least one antenna is dual polarized antenna.In some embodiments In, combination, antenna and DUT are located at interior.In some embodiments, room is one of anechoic chamber, and reverberation chamber.Some In embodiment, the output of channel simulator is summed or is calculated at least one node its average.

Embodiment advantageously provides a kind of for measuring the method and system of test system.In some embodiments, it mentions A kind of method for implementing measuring system is supplied.This method comprises: multiple nodes are arranged, each node includes being configured to generate communication The communication test instrument of signal and the combination for being configured to the channel simulator emulated to channel；And setting is configured so that family The user interface of at least one node in multiple nodes can be controlled.

In some embodiments, this method further comprises: the signal communication of setting and multiple nodes is so that communication test Instrument synchronizes in time.In some embodiments, this method further comprises: the signal communication of setting and multiple nodes is so that logical Letter tester synchronizes in terms of content.In some embodiments, this method further comprises: by multiple node locatings in test cabinet It is interior.In some embodiments, signal of communication is digital signal.In some embodiments, this method further comprises: antenna, should Antenna is located at each node.In some embodiments, this method further comprises: arranging node around the test space.

In some embodiments, a kind of method for implementing measuring system is provided.This method comprises: multiple nodes are set, Each node has the channel simulator that is configured to receive signal of communication and be detracted to the signal of communication and is configured to connect Receive the combination of the communication test instrument of damage signal of communication.This method further comprises: it is more that setting is configured so that family can control The user interface of at least one node in a node.

In some embodiments, this method further comprises: by multiple node locatings in test cabinet.In some embodiments In, this method further comprises: antenna being arranged at each node.In some embodiments, this method further comprises: surrounding The test space arranges node.In some embodiments, each communication test instrument is configured to receive number from corresponding channel simulator Word signal.In some embodiments, at least one communication test instrument is configured to receive digital signal from multiple channel simulators.

In some embodiments, the another method for implementing measuring system is provided.This method comprises: being set in center position Set the emulator core for being configured to introduce detraction in the transmission signal to generate the impairment signal for simulated channel.This method into One step includes: to be arranged to be configured to carry out up-conversion to impairment signal to generate the up-conversion of radio frequency rf signal at remote location Device.

In some embodiments, this method further comprises: communication test instrument, which is located at center Place, the communication test instrument are configured to generate transmission signal.In some embodiments, remote location center in test cabinet Outside test cabinet.

In some embodiments, the another method for implementing measuring system is provided.This method comprises: being set at remote location Low-converter is set, for each of at least one simulated channel, which is configured to carry out down radio frequency rf signal Frequency conversion is to generate down-conversion signal.This method further comprises: being configured to draw in down-conversion signal in center position setting Enter detraction to generate the impaired emulator core for receiving signal.

In some embodiments, this method further comprises: wireless communication tester, during which is located at At heart position, which is configured to handle impaired reception signal.In some embodiments, remote location is being tested Indoor and center is outside test cabinet.In some embodiments, down-conversion signal is digitized before introducing detraction.

In some embodiments, a kind of method for implementing measuring system is provided.This method comprises: at center 64 It is arranged in one be configured in the signal and transmission signal received and introduces detraction to generate for the impaired of simulated channel The emulator core 70 of signal.This method further include: be arranged at remote location 65 and be configured in following operation at least within One of frequency converter: up-conversion 72 is carried out to generate impaired radio frequency rf signal to be transmitted by antenna 12 to impairment signal；And Down coversion 90 is carried out to generate the signal received to be detracted by emulator core 70 to the received RF signal of antenna 12.

In some embodiments, this method further comprises: communication test instrument 68, the communication being arranged at center 64 Tester 68 be configured to perform the following operation in one of: generate the transmission signal to be detracted by emulator core 70 With the impaired signal that receives of the processing from emulator core 70.In some embodiments, remote location 65 is in test cabinet Interior and center 64 is in the outside of test cabinet.In some embodiments, by down-conversion signal number before introducing detraction Change.In some embodiments, frequency converter 72,90 close to antenna 12 and passes through cable connection to emulator core 70.

In some embodiments, a kind of measuring device is provided.The equipment includes: frequency converter, which is located at long-range At position 65, for each of at least one simulated channel, the frequency converter be configured in following operation at least within it One: down coversion 90 is carried out to generate down-conversion signal to the radio frequency rf signal received；And impaired transmission signal is carried out Frequency conversion 72 is to generate impaired RF signal.The equipment further include: emulator core 70, the emulator core 70 are located at center 64 Place, the emulator core 70 are configured to one of following operation: introducing in down-conversion signal impaired to generate impaired receive Signal；And transmission signal is introduced impaired to generate impaired transmission signal.

In some embodiments, which further comprises: wireless communication tester 68, the wireless communication tester 68 At center 64, which is configured to one of following operation: processing is impaired to receive signal and life At transmission signal.In some embodiments, which includes: more antennas 12, and every antenna 12 is close and is coupled to Different frequency converters 72,90.In some embodiments, which further comprises: emulator core 70, the emulator core 70 For each frequency converter 72,90.In some embodiments, frequency converter 72,90 is close to antenna 12 and by cable connection to imitative True device core 70.

In some embodiments, measuring system includes: at least one emulator core 70, at least one emulator core 70 are located at center 64 and are configured to introduce detraction in one in the signal and transmission signal received to generate Impairment signal；And at least one frequency converter, at least one frequency converter remotely located 65 and it is configured to following behaviour At least one in work: up-conversion 72 is carried out to impairment signal and is believed with the impaired radio frequency for generating to be transmitted by antenna 12 Number；And down coversion 90 is carried out to generate the reception to be detracted by emulator core 70 to the RF signal that antenna 12 receives The signal arrived.

In some embodiments, which includes: more antennas 12, at the more antennas 12 remotely located 65, often Root antenna 12 is close to different frequency converters 72,90 and the frequency converter 72,90 different from this communicates, and exists and every 12 phase of antenna Associated frequency converter 72,90.In some embodiments, which further comprises: multiple communication test instrument 68, multiple communication Tester 68 is located at center 64, and each communication test instrument 68 is close to different emulator core 70 and different from this One of emulator core 70 communicates, and each communication test instrument 68 is configured to perform the following operation: generating to by emulator core The impaired signal received that the transmission signal and processing that the heart 70 is detracted are received from emulator core 70.In some realities It applies in example, keeps multiple communication test instrument 68 synchronous.It in some embodiments, will transmission signal digitlization before being detracted.

In some embodiments, a kind of electromagnetism survey for being configured to test test system DUT 22 in test cabinet 65 is provided Amount system.The system includes: emulator core 70, which is located at the center 64 outside test cabinet 65, The emulator core 70 is configured to introduce detraction in each of at least one of signal and transmission signal received To generate digital impairment signal.The system further include: at least one of following device, the device are located inside test cabinet 65 At remote location, for each in the more antennas 12 with DUT communication: transmitter 83, the transmitter 83 is close to antenna 12 And it is communicated with the antenna 12, transmitter 83 is configured to digital impairment signal being converted to analog rf signal；And receiver 93, The receiver 93 is communicated close to antenna 12 and with the antenna 12, and receiver 93 is configured to convert the analog rf signal received It is the signal received to be detracted by emulator core 70 to generate impairment signal.

In some embodiments, transmitter 83 includes digital analog converter 80 and upconverter 74 and under receiver 93 includes Frequency converter 98 and analog-digital converter 106.In some embodiments, which further comprises: communication test instrument 68, which surveys Examination instrument 68 is located at center 64, which is configured to one of following operation: generating at least one transmission Signal and processing impairment signal.In some embodiments, which further comprises: cable, which is following operation One of: digital impairment signal 64 is carried to remote location 65 and by the signal received from remote location from the central position 65 are carried to center 64.In some embodiments, which further comprises one of the following: being configured to make multiple hairs The reference signal synchronous at least one of multiple receivers 93 of emitter 83 and local oscillator LO 76,92 signals.

In some embodiments, a kind of electromagnetism survey for being configured to test test system DUT 22 in test cabinet 65 is provided Try equipment.The equipment includes: at least one of following device, which is located at the remote location in test cabinet 65 and connects Antenna 12 closely in test cabinet 65, the antenna 12 are directed toward DUT 22: receiver 93, the receiver 93 are configured to connect on antenna 12 The analog rf signal received is converted to the down coversion digital signal to be detracted；And transmitter 83, the transmitter 83 be configured to by Impaired digital signal is converted to the analog rf signal to transmit by antenna 12.The equipment further include: emulator core 70, this is imitative True device core 70 is located at the center 64 outside test cabinet 65 and far from antenna 12, which is configured to Detraction is introduced in each of at least one copy of digital signal to generate at least one impaired digital signal.

In some embodiments, receiver 93 includes low-converter 98 and analog-digital converter 106 and transmitter 83 includes Digital analog converter 80 and upconverter 74.In some embodiments, which further comprises: communication test instrument 68, the communication Tester 68 is located at center 64, which is configured to one of following operation: generating to by emulator The transmission signal and receive and process at least one impairment signal from emulator core 70 that core 70 is detracted.In some realities Apply in example, which further comprises: cable, the cable configurations are one of following operation: by digital signal from long-range position 65 are set to be carried to center 64 and impaired digital signal 64 is carried to remote location 65 from the central position.In some embodiments In, which includes one of the following: being configured to make at least one in multiple transmitters 83 and multiple receivers 93 Synchronous reference signal and local oscillator LO 76,92 signals.

In some embodiments, a kind of method for implementing measuring system is provided.This method comprises: at center 64 Emulator core 70 is set, which, which is configured to introduce at least one of input signal and outgoing signal, subtracts Damage is to generate the digital impairment signal for simulated channel.This method further include: at the position 65 far from center 64, press According to close to the mode being directed toward the antenna 12 of test system DUT 22 and being communicated with the antenna 12, it is arranged in following device at least One: digital impairment signal is converted to analog signal and carries out upper change to the analog signal by transmitter 83, the transmitter 83 Frequency is to generate the impaired outflow radio frequency rf signal to transmit by antenna 12；And receiver 93, the receiver 93 are configured to pair The incoming RF signal received by antenna carries out down coversion to generate down-conversion signal and be converted to the down-conversion signal Digital signal is to generate the input signal to be detracted by emulator core 70.

In some embodiments, this method comprises: communication test instrument 68, the communication test instrument are arranged at center 64 68 are configured to one of following operation: generating transmission signal to be detracted by emulator core 70 and from emulator core 70 receive and process impaired input signal.In some embodiments, digital impairment signal is from imitative at center 64 True device core 70 is transmitted to the baseband signal of the transmitter 83 at remote location 65.In some embodiments, input signal is The baseband signal of the emulator core 70 at center 64 is transmitted to from the receiver 93 at remote location 65.Some In embodiment, this method comprises: providing cable, which is one of following operation: by impairment signal from centre bit 64 are set to be carried to remote location 65 and the signal received is carried to center 64 from remote location 65.

In some embodiments, a kind of method for implementing measuring system is provided.This method comprises: at center 64 Emulator core 70 is set, and each emulator core 70 is configured to introduce in one in the signal and transmission signal received It detracts to generate the impairment signal of the channel for being emulated by emulator core 70.This method further include: far from center More antennas 12 are set at the position 65 of position 64, every antenna 12 is associated with each of multiple emulator cores 70, And it is directed to every antenna 12, at least one of following device: transmitter is set at the remote location 65 close to antenna 12 83, which is converted to analog signal from digital signal for the impairment signal for being used for channel and carries out to the analog signal Up-conversion is to generate impaired radio frequency (RF) signal to transmit by antenna 12；And receiver 93, the receiver 93 is to passing through RF signal that antenna receives carry out down coversion and down-conversion signal is converted from analog into digital signal with generate to The signal received detracted by emulator core 70 associated with antenna 12.

In some embodiments, the digital signal of each of transmitter 83 and receiver 93 is in base band.Some In embodiment, this method further comprises: in the input of each emulator core 70, one of them in following device is set: It is configured to receive the second receiver and configuration of the transmission signal to be detracted by emulator core from wireless communication tester For the second transmitter 94 that impairment signal is transmitted to wireless communication tester 68 from emulator core 70.In some embodiments In, it sums before the impairment signal from emulator core 70 is input to second transmitter to the impairment signal.It should Method can also include: to be configured to impairment signal 64 being carried to remote location 65 from the central position for the every setting of antenna 12 With the cable that the signal received is carried to one of center 64 from remote location 65.In some embodiments, by The impairment signal that transmitter 83 is converted to analog signal includes the detraction from multiple emulator cores 70.In some embodiments In, this method can also include: provide be configured to make in multiple transmitters 83 and multiple receivers 93 at least one is same One of 92 signal of reference signal and local oscillator (LO) of step.In some embodiments, this method can also include: that offer is matched Being set to makes multiple transmitters 83 and at least one synchronous reference signal and local oscillator in multiple receivers 93 (LO) one of signal.

In some embodiments, it provides a kind of for testing and the method for the test system DUT of more antenna communications.It should Method includes: to be arranged to be configured to draw in each of at least one digital signal at the remote location 65 close to antenna 12 Enter detraction to generate at least one of the first emulator core of impairment signal and following device: transmitter 103, the hair Emitter 103 is configured to that radio frequency rf signal to be transmitted by antenna 12 will be converted to from the impairment signal of emulator core 70；With And receiver 113, the receiver 113 are configured to be converted to the radio frequency rf signal received from antenna 12 to by the first emulator The down coversion digital signal that core 70 is detracted.This method further include: far from antenna 12 center 64 at setting with Lower device: it at least one of wireless communication tester 68 being configured in following operation: receives and processes from reception The impairment signal of device 113；And it generates and transmits the signal of communication to be detracted by the first emulator core 70.

In some embodiments, this method further comprises: emulator core 70 at remote location 65 at center Interface is set between wireless communication tester 68 at position 64, the number that interface setting is applied to impairment signal is converted to RF Device 109 and RF applied to signal of communication are at least one of to digital quantizer 99.In some embodiments, this method is into one Step includes: to provide at least one cable 110 one of to perform the following operation: by digital signal from center 64 Interface is carried to emulator core 70 at remote location 65 and by digital signal from the emulator core at remote location 65 The heart 70 is carried to the interface at center 64.In some embodiments, remote location 65 is in test cabinet and centre bit 64 are set in the outside of test cabinet.In some embodiments, emulator core 70 from interface concurrent receive multiple signals or to Transmit to interface concurrent multiple signals.

In some embodiments, it provides a kind of for testing the electromagnetic measurement device of test system DUT.The equipment packet Include: following device, the device are located adjacent at the remote location 65 of antenna 12: at least one in receiver 113 and transmitter 103 A: receiver 113 is configured to receive radio frequency rf signal from antenna 12 and the RF signal for receiving this is converted to down coversion number Word signal；And transmitter 103 is configured to receive impaired digital signal and this is damaged digital signal to be converted to by antenna The RF signal of 12 transmission.The equipment includes being configured at least one emulator core 70 of one of following operation: to lower change Frequency digital signal is detracted；And processing signal of communication is to generate impaired digital signal.The equipment includes in following device At least one, which is located remotely from the center 64 of antenna 12: first interface 109, the first interface 109 and at least one Impairment signal to be converted to the RF signal to be handled by wireless communication tester 68 by a communication of emulator core 70；And second Interface 99, the second interface 99 communicated at least one emulator core 70 with will from wireless communication tester 68 RF signal Be converted to the digital signal to be detracted by emulator core 70.

In some embodiments, which includes: wireless communication tester, which is located remotely from antenna Center position, which, which is configured that from first interface 109, receives and processes impairment signal；And it is raw Second interface 99 is transmitted to be converted at RF signal and by the RF signal as digital signal.In some embodiments, this sets Standby includes: at least one cable 110, and at least one cable 110 is for one of following operation: by digital signal from Second interface 99 at heart position 64 is carried to emulator core 70 at remote location 65 and by digital signal from long-range Emulator core 70 at position 65 is carried to the first interface 109 at center 64.In some embodiments, long-range position 65 are set in test cabinet and center 64 is in the outside of test cabinet.In some embodiments, emulator core 70 from second Interface 99 concurrently receives multiple signals or concurrently transmits multiple signals to first interface 109.

In some embodiments, a kind of electromagnetic measuring system is provided.The system includes: more antennas 12, the more days Line 12 is in the room 65 for surrounding test zone.The system includes: at least one of following device, and the device is close to every antenna 12 and communicate with every antenna 12: transmitter 103, the transmitter 103 are configured to be converted to impaired digital signal to by day The analog radio frequency RF signal that line 12 transmits；And receiver 113, what which was configured to will to receive by antenna 12 RF signal is converted to the digital signal to be detracted by emulator core 70.The system further includes emulator core 70, for Every antenna 12, the emulator core 70 are configured to one of following operation: receiving to from the center 64 outside room 65 To at least one digital signal detracted so that the detraction digital signal is provided to transmitter 103；And to from reception The digital signal of device 113 is detracted.

In some embodiments, emulator core 70 is further configured to the pair to the digital signal from receiver 113 This is detracted.In some embodiments, which further comprises: interface, which is located at the center outside room 65 At 64, emulator core 70 of the interface at remote location and between the wireless communication tester 68 at center 64, The interface provides one of number to RF converter and RF into digital quantizer.In some embodiments, the system is further It include: at least one cable 110, for every antenna 12, at least one cable 110 is for one of following operation: will Digital signal is carried to the emulator core in room 65 from the interface at the center 64 outside room 65；And it will be digital Emulator core 70 of the signal from room 65 is carried to the interface at the center 64 outside room 65.In some embodiments In, each emulator core 70 concurrently receives multiple signals from interface 99 or concurrently transmits multiple signals to interface 99.

In some embodiments, a kind of electromagnetic measuring system is provided.The system includes: at least one in following device A, the device is in the anechoic chamber, 65 close to antenna 12: the first channel simulator 103, first channel simulator 103 configuration It is detracted by the signal that antenna 12 transmits to treat and converts the signal into RF signal；And second channel emulator 113, which is configured to the signal received by antenna 12 is converted to digital signal and to the number Word signal is detracted.The system includes: following device, anechoic chamber, of the device at the center 64 far from antenna 12 65 outside: wireless communication tester 68, the wireless communication tester 68 is at least one in following operation: generating Signal of communication and by the communication signal transmissions to the first channel simulator 103；And receives and handle from second channel The impairment signal of emulator 113.

In some embodiments, the first channel simulator 103 includes: the emulator core for being configured to detract signal 70c, it is configured to being converted to impaired digital signal into the digital analog converter 80 of analog signal and be configured to impairment signal up-conversion For the upconverter 74 of the analog rf signal to be transmitted by antenna 12.In some embodiments, second channel emulator 113 wraps It includes: being configured to carry out the low-converter 98 of down coversion to the RF signal received by antenna 12, be configured to down-conversion signal It is converted to the analog-digital converter 106 of digital signal and is configured to the emulator core 70d detracted to digital signal.One In a little embodiments, which includes: at least one interface, which is located at the center outside anechoic chamber, 65 At 64, first and second channel simulators 103,113 of at least one interface in anechoic chamber, 65 in center 64 Between the wireless communication tester 68 at place, at least one interface offer number is to RF converter and RF into digital quantizer One.In some embodiments, which includes: at least one cable 110, which is used for following operation One of: digital signal is carried to from least one of at least one interface at center 64 in remote location The first channel simulator 103 at 65 and digital signal is carried to from the second channel emulator 113 at remote location 65 At least one of at least one interface at center 64.

In some embodiments, it provides a kind of for testing the method for electromagnetically measuring of test system DUT.This method packet It includes: multiple nodes is set, each node is close to different antennas 12 and anechoic chamber, that the antenna 12 different from this communicates In 65, each node includes the combination of following device: communication test instrument 112, which is configured to generate communication letter Number and receive at least one in impaired signal of communication；And channel simulator 70, the channel simulator 70 are configured to lead to It crosses and detraction is introduced to signal of communication to emulate to signal；And controller, the controller the outside of anechoic chamber, 65 simultaneously And far from multiple nodes, which is used to provide control at least one of communication test instrument 112 and channel simulator 70 Signal.

In some embodiments, the communication test instrument 112 in multiple nodes synchronizes in time via control signal.? In some embodiments, communication test instrument 112 synchronizes in terms of content via control signal.In some embodiments, this method is into one Step includes: to provide the antenna 12 for being coupled to each channel simulator 70.In some embodiments, it is generated by communication test instrument 112 Signal of communication be in base band.In some embodiments, channel simulator 70 receives impairment signal from additional node.

In some embodiments, it provides a kind of for testing the electromagnetic measuring system of test system DUT.The system packet Include: more antennas 12, the more antennas 12 are distributed in around test section.The system further include: multiple nodes, multiple node point Cloth is around test section, and each node is close to different antennas 12 and the antenna 12 different from this communicates, and each node has It is configured to receive signal and the channel simulator 70 that emulates channel and is configured to carry out receiving signal of communication and transmission The combination of the communication test instrument 112 of at least one of signal of communication operation.

In some embodiments, base band is in by the signal of communication that communication test instrument 112 generates.In some embodiments, Channel simulator 70 detracts signal of communication and sends it to additional node.In some embodiments, channel simulator Device 70 receives impairment signal from additional node.

In some embodiments, a kind of two-way tester node is provided.The node includes: communication test instrument 112, this is logical Letter tester 112 is configured to generate signal of communication and receives impaired down coversion signal of communication；First emulator core 70e, should First emulator core 70e configuration detracts the signal of communication from communication test instrument 112；Transmitter 114, the transmitter 114 are configured to being converted to impaired signal of communication into the RF signal to be transmitted by antenna 12；Receiver 116, the receiver 116 configuration To receive RF signal from antenna 12 and the RF signal that receives this is converted to down coversion signal of communication；And second emulator Core 70f, the second emulator core 70f are configured to carry out down coversion signal of communication detraction and this are damaged down coversion letter Number it is provided to communication test instrument 112.

In some embodiments, node further comprises: signal isolator 118, which is located at two-way survey Try the reception and transmission that promote antenna 12 at the front end of device node.In some embodiments, it is generated by communication test instrument 112 Signal of communication is digital signal.In some embodiments, the communication test of communication test instrument 112 and another two-way tester node Instrument is synchronous.In some embodiments, the second emulator core 70f connects from the second emulator core of another two-way tester node Receive impairment signal.

In some embodiments, electromagnetic measuring system is configured to test test system DUT in room.The system includes: room 65.In the room 65, for each in more antennas 12, exist: communication test instrument 112, the communication test instrument 112 configuration To generate at least one transmission signal；First emulator core 70g, the first emulator core 70g are configured at least one It transmits and introduces detraction in each of signal to generate the first impairment signal and the second impairment signal；And first transmitter 114a, first transmitter 114a are configured to be converted to the first impairment signal to the penetrating according to the first polar transmission by antenna 12 Frequency RF signal.Moreover, indoors be arranged to be converted to the second impairment signal to by antenna 12 according to the second polar transmission The 2nd RF signal.

In some embodiments, for each in more antennas 12, the first and second transmitters 114 include that will be damaged Signal is converted to the digital analog converter of analog form from digital form.In some embodiments, every antenna 12 include it is a pair of just Hand over polarized antenna element.In some embodiments, detraction includes at least one of amplitude weight and time shift.In some implementations In example, room 65 is one of anechoic chamber, and reverberation chamber.In some embodiments, which further includes following device, the dress It sets in room 65, for each: first receiver 116a in more antennas 12, first receiver 116a is configured to basis First polarization receives the first RF signal from antenna 12 and the first RF signal for receiving this is converted to the first down-conversion signal； Second receiver 116b, second receiver 116b are configured to receive the 2nd RF signal and should from antenna according to the second polarization 2nd RF signal is converted to the second down-conversion signal；Second emulator core 70h, the second emulator core 70h are used for the One and second down-conversion signal each of at least one copy in introduce detraction to generate at least one output signal；With And communication test instrument 112, the communication test instrument 112 are configured to receive and process at least one output signal.

In some embodiments, it provides a kind of for testing the method for electromagnetically measuring of test system DUT in room.The party Method includes: that following device is arranged indoors for each of at least one simulated channel: the first receiver, first reception Device is configured to receive the first RF signal from antenna according to the first polarization and the first RF signal for receiving this is converted to first Down-conversion signal；Second receiver, the second receiver be configured to according to second polarization from antenna receive the 2nd RF signal and 2nd RF signal is converted into the second down-conversion signal；First emulator core, the first emulator core are used for first It is defeated to generate at least one with different delay extensions is introduced in each of at least one copy of the second down-conversion signal Signal out；And communication test instrument, the communication test instrument are configured to receive and process at least one output signal.

In some embodiments, following device is arranged in this method indoors, and the device is for each in more antennas: Communication test instrument 112, the communication test instrument 112 are configured to generate at least one transmission signal；First emulator core 70g, should First emulator core 70g is configured to introduce detraction in each of at least one transmission signal to generate the first impaired letter Number and the second impairment signal；And first transmitter 114a, first transmitter 114a are configured to convert the first impairment signal For to the first radio frequency rf signal by antenna 12 according to the first polar transmission；And second transmitter 114b, the second transmitter 114b is configured to being converted to the second impairment signal into the 2nd RF signal to by antenna 12 according to the second polar transmission.

In some embodiments, it provides a kind of for testing the electromagnetic measurement device of test system DUT.The equipment packet Include: wireless communication tester 112, the wireless communication tester 112 is close to each in more antennas 12；The wireless communication is surveyed Examination instrument 112 be configured in following operation at least one: generate and transmit signal of communication；And receive and process biography Impairment signal out.The equipment further comprises: the first emulator core 70g, and the first emulator core 70g is configured to communication Signal is detracted to generate outflow impairment signal；Second emulator core 70h, the second emulator core 70h are configured to reception To signal detracted to generate incoming impairment signal；A pair of of transmitter 114, each is configured to receive outflow impairment signal And outflow radio frequency rf signal is generated, one for each in two kinds of polarization；And a pair of of receiver 116, each is matched It is set to from least one antenna 12 and receives two not different signals in co polar signal and by two different poles Change signal and is presented to the second emulator core 70h with pending detraction.

In some embodiments, which further comprises: controller, and the controller is far from more antennas 12, the control Device is configured to keep the first emulator core 70g synchronous and keeps the second emulator core 70h synchronous.In some embodiments, One emulator core 70g and the second emulator core 70h are differently synchronous.In some embodiments, tester is wirelessly communicated 112, the first and second emulator cores 70 and first and second pairs of transmitters 114 are located adjacent to antenna 12 and are located away In the test cabinet 65 of controller outside test cabinet 65, and it is configured at least control wireless communication tester 112.In some realities It applies in example, each in more antennas 12 is dual polarized antenna.In some embodiments, which further comprises: first Signal isolator 118a, first signal isolator 118a are coupled to first transmitter and a pair in a pair of of transmitter 114 First receiver in receiver 116；And second signal isolator 118b, second signal isolator 118b are coupled to one To second receiver in second transmitter and a pair of of receiver 116 in transmitter 114.In some embodiments, with 12 associated first and second emulators core 70 the third and fourth emulator core associated with another antenna of antenna is logical Letter.

As skilled in the art will appreciate, concept described herein can be implemented as method, data processing system, And/or computer program product.Therefore, concept described herein can take complete hardware embodiment, complete software embodiment The form of embodiment in terms of either combination is commonly referred to as the software and hardware of " circuit " or " module " herein.This Outside, the disclosure can be produced using the computer program in the tangible computer usable storage medium with computer program code The form of product, which is included in can be in medium performed by computer.Can use any suitable has Shape computer-readable medium, comprising: hard disk, CD-ROM, electronic storage device, light storage device or magnetic memory apparatus.

Some embodiments are described herein by reference to the flowchart and or block diagram of method, system and computer program product.It answers The combination of the understanding, each frame and the frame in flowchart and or block diagram of flowchart and or block diagram can be by computer journey Sequence instructs to implement.These computer program instructions can be provided to general purpose computer (thus forming special purpose computer), specially With computer or the processor of other programmable data processing devices to generate machine instruction, so that the instruction is passing through Creation is for implementing in flow chart and/or one when being executed by computer or the processor of other programmable data processing devices Or the mechanism for the function action specified in multiple block diagrams.

These computer program instructions can also be stored in can guide computer or other programmable datas to handle In the computer-readable memory or storage medium that equipment works according to ad hoc fashion, so that being stored in computer-readable Instruction in memory generates product, comprising: the function that implementation is specified in flow chart and/or one or more block diagram/dynamic The command mechanism of work.

Computer program instructions can also be loaded into computer or other programmable data processing devices so that Series of operation steps are executed on computer or other programmable devices to generate computer implemented process, so that The instruction executed on computer or other programmable devices is provided for implementing in flow chart and/or one or more frame The step of function action specified in figure.

It should be understood that the function action mentioned in frame can not occur according to the sequence mentioned in operating instruction.Example Such as, related function action is depended on, two frames continuously shown can actually be executed substantially simultaneously, or sometimes Frame can be executed in a reverse order.Although some in schematic diagram include the arrow on communication path to show communication Main way, it should be appreciated that communication can be occurred with the direction opposite with the arrow of description.

In conjunction with above description and attached drawing, many different embodiments have been disclosed herein.It should be understood that from literal upper description It will be unnecessary repetition and make one to obscure with each combination for illustrating these embodiments and word combination.It therefore, can be with any Mode and/or combination are to combine all embodiments, and this specification (including attached drawing) should be construed to support any this group The claim of conjunction or sub-portfolio.

It should be understood by those skilled in the art that the present embodiment is not limited to the content for having specifically illustrated and having described above.In addition, Unless have state otherwise above, it should be noted that, all attached drawings are not necessarily drawn to scale.Following claims is not being departed from In the case where range, it can carry out various modifications and change according to the above instruction.

Claims (20)

1. a kind of method for implementing measuring system, which comprises

Emulator core is arranged in center position outside test cabinet, and the emulator core configuration is in the signal received Detraction is introduced in one in transmission signal to generate the impairment signal for simulated channel；And

At least one of frequency conversion being configured in following operation is set at the indoor remote location of test close to antenna Device:

Up-conversion is carried out to generate to be penetrated by the impaired of antenna transmission to the impairment signal in one of base band and intermediate frequency Frequency RF signal；And

RF signal received to antenna carries out down coversion to generate and be in base band and intermediate frequency to what is detracted by emulator core One of the signal received.

2. according to the method described in claim 1, further comprising, in the center for approaching and being connected to emulator core Place, setting wireless communication tester, the communication test instrument be configured to perform the following operation in one of: generate to by imitating The impaired signal received of transmission signal and processing from emulator core that true device core is detracted.

3. a kind of method for implementing measuring system, which comprises

At the remote location inside the test cabinet close to antenna, for each of at least one simulated channel, setting becomes Frequency device, the frequency converter are configured at least one in following operation:

The radio frequency rf signal received is subjected to down coversion to generate the down-conversion signal for being in one of base band and intermediate frequency； And

Impaired transmission signal in one of base band and intermediate frequency is subjected to up-conversion to generate impaired RF signal；

Emulator core is arranged in center position outside test cabinet, and the emulator core configuration is its in following operation One of:

Detraction is introduced in down-conversion signal to generate impaired reception signal；And

Introduce detraction in the transmission signal to generate impaired transmission signal.

4. according to the method described in claim 3, further comprising, in the center for approaching and being connected to emulator core Place, setting wireless communication tester, wireless communication tester configuration perform the following operation in one of: processing is damaged Reception signal and generate transmission signal.

5. according to the method described in claim 1, wherein the frequency converter close to the antenna far from center and passes through electricity Cable is connected to the emulator core of center position.

6. according to the method described in claim 1, wherein the measuring system is included in inside test cabinet and far from centre bit More antennas of the emulator core in setting, every antenna is close and is coupled to different frequency converters.

7. according to the method described in claim 3, wherein the measuring system is included in inside test cabinet and far from centre bit More antennas of the emulator core in setting, every antenna is close to different frequency converters.

8. a kind of measuring system, comprising:

At least one emulator core, be located at the center position outside test cabinet and be configured in the signal that receives and It transmits one of signal and introduces detraction to generate impairment signal；And

At least one frequency converter is located adjacent at the remote location inside the test cabinet of antenna and is configured in following operation At least one:

Up-conversion is carried out to generate to by the impaired of antenna transmission to the impairment signal in one of base band and intermediate frequency Radio frequency rf signal；And

Down coversion is carried out to RF signal received by antenna to generate and be in base band in what is detracted by emulator core The signal of one of frequency received.

9. measuring system according to claim 8, further comprises:

More antennas, which, which is located at, tests at indoor remote location, every antenna close to different frequency converters and There is frequency converter associated with every antenna at the indoor remote location of test in the frequency converter communication different from this.

It further comprise multiple emulator cores of center position and multiple 10. measuring system according to claim 9 Communication test instrument, each communication test instrument close to the different emulator cores in multiple emulator cores and it is different from this emulation Device core communication, each communication test instrument are configured to one of following operation: generating to be detracted by emulator core Transmission signal and processing the detraction received from emulator core the signal received.

11. measuring system according to claim 10, wherein keep multiple communication test instrument synchronous.

12. measuring system according to claim 8, wherein will transmission signal digitlization before being detracted.

13. measuring system according to claim 8, wherein the indoor frequency converter of the test is by cable connection to remote Emulator core from test cabinet.

14. according to the method described in claim 1, further comprising by local oscillator signals from the centre bit outside test cabinet Set the frequency converter at the remote location being supplied to inside test cabinet.

15. according to the method for claim 14, wherein the cable by the way that impairment signal to be carried to remote location will originally Ground oscillator signal is carried to remote location.

16. according to the method described in claim 1, further comprising the multiple emulation of center position setting outside test cabinet Device core, each emulator core are associated from the different frequency converters in multiple frequency converters of the center position inside test cabinet And it is connected to the difference frequency converter, the mutiple antennas in each of multiple frequency converters difference frequency converter and test cabinet inside In different antennae connection.

17. according to the method described in claim 2, from the emulator core transmission of the center position outside test cabinet to test The signal of frequency converter at interior remote location is one of in baseband signal and intermediate-freuqncy signal.

18. according to the method described in claim 4, from the emulator core transmission of the center position outside test cabinet to test The signal of frequency converter at interior remote location is one of in baseband signal and intermediate-freuqncy signal.

19. measuring system according to claim 8 further comprises the local vibration of the center position outside test cabinet Device is swung, the frequency converter at remote location being supplied to inside test cabinet for generating local oscillator signals.

20. measuring system according to claim 19, wherein by impairment signal is carried to the cable of remote location come Local oscillator signals are carried to remote location.